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Photothermoacoustic effect in solids with piezoelectric detection

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Abstract

The photothermoacoustic effect in solids with piezoelectric signal detection is investigated theoretically and experimentally. Analytical expressions are found for the amplitude and phase shift of the photothermoacoustic signal as a function of the thicknesses of the sample and piezoelectric transducer, the modulation frequency, and the material constants of the structure. A method is proposed for detecting the signal using a compound piezoelectric transducer. It is shown for a bilayer piezoelectric transducer that the reduced Young’s modulus and the thermal diffusion coefficient of the experimental object can be found from the amplitude-frequency and phase-frequency curves.

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Authors and Affiliations

  1. Taras Shevchenko Kiev University, 252017, Kiev, Ukraine

    D. A. Andrusenko & I. Ya. Kucherov

Authors
  1. D. A. Andrusenko
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  2. I. Ya. Kucherov
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Zh. Tekh. Fiz. 69, 1–5 (December 1999)

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Andrusenko, D.A., Kucherov, I.Y. Photothermoacoustic effect in solids with piezoelectric detection. Tech. Phys. 44, 1397–1401 (1999). https://doi.org/10.1134/1.1259558

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  • DOI: https://doi.org/10.1134/1.1259558

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